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Finding the Fourth Proportional to 70,005.52, 105,008.24 and 20,757.52

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Solution

The fourth proportional to 70,005.52, 105,008.24 and 20,757.52 is: 31,136.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,005.52 : 105,008.24 = 20,757.52 : x
  2. Step 2: Convert to fraction form
    70,005.52/105,008.24 = 20,757.52/x
  3. Step 3: Cross multiply
    70,005.52x = 105,008.24 × 20,757.52
  4. Step 4: Simplify right side
    70,005.52x = 2,179,710,641.96
  5. Step 5: Solve for x
    x = 2,179,710,641.96/70,005.52
  6. Step 6: Final answer
    x = 31,136.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.